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Finding the Fourth Proportional to 569,618.69, 786,071.74 and 321,240.90

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Solution

The fourth proportional to 569,618.69, 786,071.74 and 321,240.90 is: 443,311.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    569,618.69 : 786,071.74 = 321,240.90 : x
  2. Step 2: Convert to fraction form
    569,618.69/786,071.74 = 321,240.90/x
  3. Step 3: Cross multiply
    569,618.69x = 786,071.74 × 321,240.90
  4. Step 4: Simplify right side
    569,618.69x = 252,518,391,615.96
  5. Step 5: Solve for x
    x = 252,518,391,615.96/569,618.69
  6. Step 6: Final answer
    x = 443,311.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.